ModuleNotFoundError: No module named 'angr.storage.memory'

[Squirre17]

$ /bin/gdb -q ./angr_find
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/squ/.local/lib/python3.8/site-packages/angrgdb/__init__.py", line 6, in <module>
    from .debugger import *
  File "/home/squ/.local/lib/python3.8/site-packages/angrgdb/debugger.py", line 22, in <module>
    from angrdbg import *
  File "/home/squ/.local/lib/python3.8/site-packages/angrdbg/__init__.py", line 6, in <module>
    from .core import get_logger, StateShot, StateManager, get_registers
  File "/home/squ/.local/lib/python3.8/site-packages/angrdbg/core.py", line 14, in <module>
    from .memory_8 import SimSymbolicDbgMemory
  File "/home/squ/.local/lib/python3.8/site-packages/angrdbg/memory_8.py", line 17, in <module>
    from angr.storage.memory import SimMemory, DUMMY_SYMBOLIC_READ_VALUE
ModuleNotFoundError: No module named 'angr.storage.memory'
/home/squ/.gdbinit:6: Error in sourced command file:

seems like no memory module under storage?

$ python3 --version  
Python 3.8.10

$ pip show angr      
Name: angr
Version: 9.2.43

$ pip show angrdbg
Name: angrdbg
Version: 1.0.16

$ pip show angrgdb
Name: angrgdb
Version: 1.0.14